body {
  margin: 0;
}

.wrapper {
  max-width: 1040px;
  min-width: 980px;
  margin: auto;
  padding: 0 20px;
  box-sizing: border-box;
}

.is-wide .wrapper {
  max-width: 1440px;
}

.is-wider .wrapper {
  max-width: none;
}
